StatsLife - Royal Statistical Society
A professional body for all statisticians and data analysts that, since its foundation in 1834, promoting the importance of statistics and data. Publishers of Significance magazine, StatsLife freely offers resources for teachers, a glossary, and much
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Stayorswitch.com - Jeremy Jones
Game simulation and animated explanation videos of the Monty Hall problem. A blog by Jones, who teaches high school math, dates back to February, 2014, with other probability puzzles.
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The Steiner Tree Page - Joe Ganley
The Steiner tree problem is a minimum interconnection problem. The most basic
version is in a graph: given a weighted graph in which a subset of vertices are identified as terminals, find a minimum-weight connected subgraph that includes all the terminals.
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Stella's Stunners - Rudd Crawford
More than 600 non-routine mathematics problems named in honor of the Dutch baroness Ecaterina Elizabeth van Heemsvloet tot Schattenberg. Each collection in the Stella Library contains five subsets, one for each course of Pre-Algebra, Algebra I, Geometry,
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STEM Sheets
Makers of printable flash cards. Choose number ranges, and whether or not to include answers, before freely downloading PDFs of addition, subtraction, multiplication, or division problems.
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Steve Fulling's Home Page - Stephen A. Fulling
Courses in Foundation Coalition Freshman Calculus, linearity, and other subjects offer objectives, assignments, solutions and reports, exams, and supporting documentation such as books (.pdf, .ps, and .dvi formats). The site also includes access to the
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The Storybook of Geometry - ThinkQuest 1996
Learn the basics of geometry and see how they relate to real world situations. Explore and read stories that help to uncover the mysteries of geometry. Story problems (with answers): The Great Space Ace; The Pharoah's Pyramid; The Ice Cream Cone; Filling
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StudyJams! - Scholastic Inc.
An online service that complements the school math and science curriculum for grades 3 - 6. Aligned with state curriculum standards, StudyJams! takes math and science problems and presents them using relevant, real-world examples students can easily understand.
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studymaths.co.uk - Jonathan Hall
Free help on your maths questions. See also the bank of auto-scoring GCSE maths questions, games, and resources such as revision notes, interactive formulae, and glossary of terms.
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StudyPug - Dennis Lee
Homework help and tutoring services for algebra, geometry, pre-calculus, trigonometry, calculus, and more. Preview some topics, all of which include interactive problems and video of Lee working through exercises.
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subtangent.com - Duncan Keith
With Flash, explore interactive investigations such as Number Stairs and Diagonal Differences. Play Mathionaire, based on the popular TV game, but with maths questions. Quizzes include Function Machines, Number Properties, Pythagoras, and Quadratics 1.
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Sudoku - Pappocom, aka Wayne Gould
Finish filling in the 9x9 grid so that every row, every column, and each of the nine 3x3 boxes contains the digits 1 through 9. Different from a magic square, this puzzle requires no arithmetic, only reasoning and logic to deduce which digit to put where.
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A Su Doku solver
Solvers for sudoku puzzles, with documentation, source code, and binaries. Frequently asked questions about this numeric puzzle include "Su Doku" or "Sudoku"? How does the solver work? How do I compose a Su Doku problem? How few cells could appear on
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Suffolkmaths.co.uk - Mark Greenaway
Greenaway hosts a select collection of third-party resources in the public domain, many drawn from the UK's Department for Education (DfEs): teaching materials for Great Britain's different grade levels; problem solving documents on problem-solving strategies,
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SummerSchoolMath
Math computation resources for children to practice math facts either as a school year supplement or summer "math-loss" preventer. One-page, 100-problem addition, subtraction, multiplication, and division worksheets utilize "the time-tested principle
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Super Maths World - P. and R. May
Topic-based multiple choice assessment with a video-game feel. Year-long subscriptions available for schools/districts, with a reduced rate for small schools and individual customers. Some activities are free to guests.
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Table of numbers problem - Dario Alpern
Place the natural numbers between 1 and mn in a table of m rows by n columns, so that the sum of the addition of the products of the numbers that compose the rows plus the addition of the products of the numbers that compose the columns is as low as possible.
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TagMath - Cody Taggart
Blog by a Wisconsinite now teaching at the United Nations International School in Hanoi (Vietnam). Weekly updates, 48-hour challenges, and other posts addressed to Taggart's students date back to February, 2012; and have included "Dublox," "Reviewing
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Tangram Page - S. T. Han
All about tangrams, an ancient Oriental toy that has 7 pieces: 5 triangles in different sizes, 1 square, and 1 parallelogram. The object of the game is to form a given shape using all 7 pieces. Introduction, Puzzle of the Month, PC/Mac Software, Articles
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Tangrams - J. L. Read; Enchanted Mind
A tangram applet that allows you to rearrange the seven forms to exactly reproduce the given image. To move the pieces, drag them with the mouse. To rotate pieces, click with the right mouse button or (on the Mac with a one-button mouse) click while holding
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Teach All Kids - Derman Enterprises, Inc.
Teaching advice, ideas, techniques and math educational worksheets designed to help teach students with learning difficulties. Teaching materials for different subjects including math, and community resources: blogs, forums, polls, and related resources.
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Teacher Exchange - the Math Forum
Web units, lessons, and activities organized by NCTM Standards and grade band level. Created by Math Forum staff members, educators, and collaborations between the two. Teachers may contribute their own lessons and ideas as well.
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Teachers' Lab - Annenberg Media
Labs based on professional development series and workshops broadcast on the Annenberg/CPB Math and Science Project Channel. Each combines online activities with background information and interactive polls or worksheets for use in classrooms, with links
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